Issued Patents All Time
Showing 1–25 of 73 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9236077 | Glass for use as substrate for information recording medium, substrate for information recording medium and information recording medium, and their production methods | Kazuo Tachiwana, Yoichi Hachitani, Mikio Ikenishi, Kinobu Osakabe | 2016-01-12 |
| 8883330 | Glass for chemical strengthening, substrate for information recording media and information recording media | Mikio Ikenishi | 2014-11-11 |
| 8826695 | Method for manufacturing optical glass element | Yasuhiro Fujiwara | 2014-09-09 |
| 8785339 | Optical glass | Yoshio Nojima, Hiroki Takazawa | 2014-07-22 |
| 8785011 | Glass for use as substrate for information recording medium, substrate for information recording medium and information recording medium, and their production methods | Kazuo Tachiwana, Yoichi Hachitani, Mikio Ikenishi, Kinobu Osakabe | 2014-07-22 |
| 8741796 | Optical glass | Tomoaki Negishi | 2014-06-03 |
| 8741795 | Optical glass | Yunoshin Kanayama, Tomoaki Negishi | 2014-06-03 |
| 8728963 | Optical glass | Tomoaki Negishi | 2014-05-20 |
| 8703295 | Glass material for mold pressing, method for manufacturing same, and method for manufacturing optical glass element | Yasuhiro Fujiwara, Hiroshi Kohno, Kohichiro Shiraishi | 2014-04-22 |
| 8697592 | Glass substrate for information recording medium and magnetic information recording medium to which the glass substrate is applied | Mikio Ikenishi, Atsuko Morita | 2014-04-15 |
| 8656734 | Material for information recording medium substrate, information recording medium substrate, information recording medium, and method for manufacturing them | Yoichi Hachitani, Kazuo Tachiwana | 2014-02-25 |
| 8492299 | Optical glass | Tomoaki Negishi | 2013-07-23 |
| 8486536 | Glass material for press molding, method for manufacturing optical glass element using same, and optical glass element | Hiroshi Kouno, Kouichiroh Shiraishi | 2013-07-16 |
| 8476178 | Optical glass | Yoshio Nojima, Hiroki Takazawa | 2013-07-02 |
| 8424344 | Optical glass | Yunoshin Kanayama, Tomoaki Negishi | 2013-04-23 |
| 8410008 | Optical glass | Tomoaki Negishi | 2013-04-02 |
| 8357459 | Glass for use in substrate for information recording medium, substrate for information recording medium and information recording medium, and their manufacturing method | Kazuo Tachiwana, Yoichi Hachitani, Mikio Ikenishi, Kinobu Osakabe | 2013-01-22 |
| 8336332 | Process for the production of glass molded article, optical element produced by the process, and method of treating glass | Kazutaka Hayashi, Hiromasa Tawarayama, Hiroshi Kawazoe | 2012-12-25 |
| 8261579 | Optical glass, precision press-molding preform and optical element | Mikio Ikenishi | 2012-09-11 |
| 8222170 | Glass substrate for information recording medium and magnetic information recording medium to which the glass substrate is applied | Mikio Ikenishi, Atsuko Morita | 2012-07-17 |
| 8206830 | Glass material for mold pressing and method for manufacturing optical glass element | Yasuhiro Fujiwara | 2012-06-26 |
| 8158541 | Optical glass, precision press-molding preform and optical element | Mikio Ikenishi | 2012-04-17 |
| 8127570 | Optical glass | Tomoaki Negishi | 2012-03-06 |
| 8110514 | Optical glass | Tomoaki Negishi | 2012-02-07 |
| 8076014 | Glass for use in substrate for information recording medium, substrate for information recording medium and information recording medium, and their manufacturing method | Kazuo Tachiwana, Yoichi Hachitani, Mikio Ikenishi, Kinobu Osakabe | 2011-12-13 |